CN208920480U - Negative pressure adjusting device and regulating system - Google Patents
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- CN208920480U CN208920480U CN201821790630.3U CN201821790630U CN208920480U CN 208920480 U CN208920480 U CN 208920480U CN 201821790630 U CN201821790630 U CN 201821790630U CN 208920480 U CN208920480 U CN 208920480U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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Abstract
Disclose a kind of negative pressure adjusting device and regulating system.By being arranged, the interconnected difference of multiple detection unit detections at least two is monitored space interior to the negative pressure adjusting device and external pressure signal exports pressure difference signal, control unit exports control signal according to the pressure difference signal, adjusts unit according to the corresponding new blower of control signal control and carries out negative pressure adjusting.The negative pressure in monitored space can be adjusted in real time in this way, to reduce the negative effect that super high-rise building bottom generates the operation of Architectural Equipment due to negative pressure problem.
Description
Technical field
The utility model relates to air-conditioning technical fields, and in particular to a kind of negative pressure adjusting device and regulating system.
Background technique
Due to stack effect, in the bottom of super high-rise building negative pressure easy to form, this health and building to indoor occupant
The operation of equipment can have a negative impact, and such as cause elevator door that can not normally be opened and closed when flowing through gap with air and generate noise.
In the prior art solve super high-rise building negative pressure problem mode first is that in the air-conditioning ventilation system design phase, add
Certain air outputs for being also easy to produce indoor negative pressure space are designed greatly.
However, air output cannot be adjusted in real time according to differential pressure conditions in the prior art, meanwhile, when design of air conditioning and ventilation
The air output design objective of increasing might not be suitable, in fact it could happen that the excessive or insufficient situation of air output.
Utility model content
In view of this, the present invention provides a kind of negative pressure adjusting device and regulating systems, can be according to monitored space
Pressure difference signal between inside and outside changes air output to realize the adjusting to negative pressure.
In a first aspect, the utility model embodiment provides a kind of negative pressure adjusting device, described device includes:
Multiple detection units are configured as the interconnected difference of detection at least two and are monitored space interior and outside
Pressure signal exports pressure difference signal；
Control unit is connect with the multiple detection unit, is configured as exporting control signal according to the pressure difference signal；
And
Adjust unit, connect with described control unit, be configured as according to the control signal control accordingly newly blower into
Row air quantity is adjusted.
Preferably, it includes the first monitored space and the second quilt that described at least two interconnected differences, which are monitored space,
Monitor space；
The multiple detection unit includes:
First detection unit is mounted on the first monitored space, is configured as the first monitored space interior of detection and outer
The pressure signal in portion exports the first pressure difference signal；And
Second detection unit is mounted on the second monitored space, is configured as the second monitored space interior of detection and outer
The pressure signal in portion exports the second pressure difference signal.
Preferably, described control unit is configured as being exported according to first pressure difference signal and second pressure difference signal
First control signal and second control signal.
Preferably, described control unit is configured as exporting the control according to preset threshold pressure differential and the pressure difference signal
Signal processed.
Preferably, the detection unit is differential pressure pickup.
Preferably, described control unit is PID controller.
Preferably, described control unit is configured as exporting the control according to scaling signal, integrated signal and differential signal
Signal processed；
Wherein, the scaling signal is the parameter proportional to the pressure difference signal, and the integrated signal is and the pressure
The proportional parameter of the integral of difference signal, the differential signal are the parameter proportional to the differential of the pressure difference signal.
Preferably, described control unit is configured as reducing when first pressure difference signal and second pressure difference signal increases
When big, the corresponding new blower of output control signal control increases sending for the described first monitored space and the second monitored space
Air quantity.
Preferably, described control unit is configured as increasing when first pressure difference signal and second pressure difference signal subtracts
Hour, the corresponding new blower of output control signal control reduces sending for the described first monitored space and the second monitored space
Air quantity.
Second aspect, the utility model embodiment provide a kind of regulating system, the system comprises:
Negative pressure adjusting device as described in relation to the first aspect；And
Multiple new blowers are configured as being controlled by the negative pressure adjusting device progress air quantity adjusting.
In the technical solution of the utility model, it is interconnected not by the way that multiple detection unit detections at least two are arranged
Pressure difference signal is exported with monitored space interior and external pressure signal, control unit is exported according to the pressure difference signal and controlled
Signal adjusts unit according to the corresponding new blower of control signal control and carries out negative pressure adjusting.It in this way can be in real time to monitored
Negative pressure in space is adjusted, negative since negative pressure problem generates the operation of Architectural Equipment to reduce super high-rise building bottom
Face is rung.
Detailed description of the invention
By referring to the drawings to the description of the utility model embodiment, the above-mentioned and other mesh of the utility model
, feature and advantage will be apparent from, in the accompanying drawings:
Fig. 1 is the floor map of the first floor of the utility model embodiment super high rise building；
Fig. 2 is the variation of the first pressure difference signal of the utility model embodiment and the second pressure difference signal with lobby door open area
Tendency chart；
Fig. 3 is the schematic diagram of the utility model embodiment regulating system；
Fig. 4 is the signal processing schematic diagram of the utility model embodiment regulating system.
Specific embodiment
The application is described below based on embodiment, but the application is not restricted to these embodiments.Under
Text is detailed to describe some specific detail sections in the datail description of the application.Do not have for a person skilled in the art
The application can also be understood completely in the description of these detail sections.In order to avoid obscuring the essence of the application, well known method, mistake
There is no narrations in detail for journey, process, element and circuit.
In addition, it should be understood by one skilled in the art that provided herein attached drawing be provided to explanation purpose, and
What attached drawing was not necessarily drawn to scale.
It will also be appreciated that in the following description, " circuit " refers to be passed through electrically by least one element or sub-circuit
The galvanic circle that connection or electromagnetism connect and compose.When title element or the " connection of another element of circuit " being connected to " or element/circuit
" between two nodes when, it, which can be, is directly coupled or connected another element or there may be intermediary element, element it
Between connection can be physically, in logic or its combination.On the contrary, when claiming element " being directly coupled to " or " directly connecting
Be connected to " another element when, it is meant that the two be not present intermediary element.
Unless the context clearly requires otherwise, "include", "comprise" otherwise throughout the specification and claims etc. are similar
Word should be construed as the meaning for including rather than exclusive or exhaustive meaning；That is, be " including but not limited to " contains
Justice.
In the description of the present application, it is to be understood that term " first ", " second " etc. are used for description purposes only, without
It can be interpreted as indication or suggestion relative importance.In addition, in the description of the present application, unless otherwise indicated, the meaning of " multiple "
It is two or more.
With reference to the accompanying drawing and specific embodiment is described further the application.
Fig. 1 is the floor map of the first floor of the utility model embodiment super high rise building.As shown in Figure 1, for building
Object entirety is built, the first floor of super high rise building is usually divided into external environment and room by peripheral structure 100 and lobby door 200
Two, interior hall part, wherein indoor hall is the first monitored space.For the building first floor, elevator enclosed structure 300
Building first floor space is divided into elevator and indoor two, hall part with elevator door 400, wherein elevator is the second quilt
Monitor space.Due to having the big space of degree up and down such as elevator in super high rise building, stack effect is obvious, so that
The pressure signal P 2 for building hall in first floor room is less than the pressure signal P 1 of external environment, and the difference of pressure signal P 1 and P2 are the
One pressure difference signal Δ Pw.Since elevator is stack effect generation area, indoor hall and elevator are separated by elevator door 400,
Therefore pressure signal P3 is less than the pressure signal P 2 in hall in first floor room, the difference of pressure signal P 2 and P3 in building first floor elevator
Value is the second pressure difference signal Δ Ps.When lobby door 200, elevator door 400, outer enclosed structure 100 and elevator building enclosure 300
When air-tightness does not change, the air pressure in external environment and indoor hall, indoor hall and elevator reaches dynamic equilibrium, i.e. Δ
Pw, Δ Ps value be in stable state.Δ Pw, the calculation formula of Δ Ps are as follows:
Δ Pw=P1-P2,
Δ Ps=P2-P3,
Wherein, Δ Pw is the first pressure difference signal, and Δ Ps is the second pressure difference signal, and the pressure signal of P1 external environment, P2 is
The pressure signal in indoor hall, P3 are the pressure signal of elevator.
When lobby door 200 has personnel's disengaging, lobby door 200 is opened, and indoor hall and external environment are connected, external environment
Atmosphere enters the room hall, so that the pressure signal P 2 in indoor hall increases, the first pressure difference signal Δ Pw reduces, at this time because of interior
The pressure signal P 2 in hall increases, so that the second pressure difference signal Δ Ps increases.When 200 personnel of lobby door disengaging finishes, big
In 200 closing process of hall door, indoor hall is connected area with external environment and is gradually reduced, so that the pressure signal in indoor hall
P2 reduces, and the first pressure difference signal Δ Pw increases.At this time because the pressure signal P 2 in indoor hall reduces, so that the second pressure difference signal Δ
Ps reduces.Specific change curve is as shown in Fig. 2, Fig. 2 is the utility model embodiment the first pressure difference signal Δ Pw and the second pressure difference
Signal delta Ps with lobby door open area trend chart.In a point, lobby door is started to open, the first pressure difference signal Δ Pw
Start to reduce, and the second pressure difference signal Δ Ps starts to increase.In b point, lobby door is opened to the maximum, the first pressure difference signal Δ Pw drop
To minimum, the second pressure difference signal Δ Ps increasing to maximum.After b point, lobby door starts to progressively close off, and the first pressure difference signal Δ Pw is opened
Begin to increase, the second pressure difference signal Δ Ps starts to reduce, until in c point, lobby door is closed, the first pressure difference signal Δ Pw and second
Pressure difference signal Δ Ps restores to steady-state value.
As a result, lobby door can be judged according to the variation tendency of the first pressure difference signal Δ Pw and the second pressure difference signal Δ Ps
Switch, can not be closed with the air output of hall and elevator in this regulation room to guarantee Indoor Environmental Quality and prevent elevator door
The case where closing.
Fig. 3 is the schematic diagram of the utility model embodiment regulating system.As shown in figure 3, regulating system includes that negative pressure is adjusted
Device 1, the first new blower 2 and the second new blower 3.Negative pressure adjusting device 1 is configured as detection at least two and is interconnected not
With monitored space interior and external pressure signal, corresponding pressure difference signal is obtained, and in real time according to pressure difference signal control the
One new blower 2 and the second new blower 3 carry out negative pressure adjusting.May be implemented in this way to the negative pressure formed in real-time monitored space into
Row is adjusted.
In the present embodiment, negative pressure adjusting device 1 includes first detection unit 11, second detection unit 12, control unit
13 and adjust unit 14.First detection unit 11 is configured as detecting the pressure signal in indoor hall and external environment and exports the
One pressure difference signal Δ Pw.Second detection unit 12 is configured as the pressure signal of detection elevator and indoor hall and exports the
Two pressure difference signal Δ Ps.Control unit 13 is connect with the first detection unit 11 and the second detection unit 12, is configured
To export first control signal and second control signal according to first pressure difference signal and second pressure difference signal.It adjusts single
Member 14 is configured as controlling the first new blower 2 according to the first control signal, is controlled according to the second control signal
The second new blower 3 realizes that real-time perfoming air quantity is adjusted with this.Wherein, the control signal and adjustment signal are electric current
Or voltage signal.
In the present embodiment, regulating system further includes the first air duct 4, the second air duct 5, the first air port 6 and the second air port 7.
Hall indoors is installed in first air port 6, is connect by the first air duct 4 with the first new blower 2.Second air port 7 is mounted on elevator,
It is connect by the second air duct 5 with the second new blower 3.Specifically, the first new blower 2 and the second new blower 3 are controlled by negative pressure adjusting
Device 1 gives indoor hall and elevator to convey fresh air respectively by corresponding air duct and air port.
Preferably, first detection unit 11 and second detection unit are differential pressure pickup (Pressure Transducer).
Differential pressure pickup is a kind of sensor for measuring difference between two pressure.In the present embodiment, first detection unit 11
Lobby door two sides are mounted on, be configured as detecting the pressure signal in indoor hall and external environment and export the first pressure difference signal Δ
Pw.Second detection unit 12 is mounted on elevator door two sides, is configured as the pressure signal of detection elevator and indoor hall and defeated
Second pressure difference signal Δ Ps out.
In the present embodiment, control unit 13 is configured as according to the first pressure difference signal Δ Pw and second pressure
Difference signal Δ Ps exports first control signal and second control signal respectively.The first control signal is for controlling the first fresh air
Machine 2 carries out air quantity adjusting, and the second control signal carries out air quantity adjusting for controlling the second new blower 3.
In the present embodiment, control unit 13 can be according to the variation of the first pressure difference signal Δ Pw and the second pressure difference signal Δ Ps
Trend judges the switch of lobby door, controls hall and elevator in the first new blower 2 and the second new 3 regulation room of blower with this
Air output.Control unit 13 by comparing the difference m of Δ Pw real value and a upper value positive and negative and Δ Ps real value and upper one
The difference n's of value is positive and negative, judges the opening and closing situation of lobby door.
Specifically, when m is negative and n is timing, during judging that lobby door 200 is in unlatching, at this point, due to outside
The pressure signal P 1 of environment is greater than the pressure signal P 2 in indoor hall, so that the air-flow of external environment enters the room hall, therefore,
The air output for needing to increase the first new blower 2 comes so that P2 increases, so that the air for reducing external environment enters the room hall, shadow
Ring the environmental quality in interior hall.Simultaneously as P2 increases, so that the second pressure difference signal Δ Ps increases, therefore, it is necessary to increase electricity
The air output of stair shaft is so that P3 increases, to reduce the second pressure difference signal Δ Ps.That is, as the first pressure difference signal Δ Pw
Reduce, and when the second pressure difference signal Δ Ps increase, increases the air output in indoor hall and elevator.
When m is positive and n is negative, during judging that lobby door 200 is in closing, at this point, due to external environment with
The connection area in indoor hall is gradually reduced, and is also gradually decreased so that the air of external environment enters the room hall, so that first
Pressure difference signal Δ Pw increases, and therefore, it is necessary to reduce the air output of the first new blower 2 to come so that P2 reduces, to guarantee indoor ring
Border quality.Simultaneously as P2 reduce so that the second pressure difference signal Δ Ps reduce, therefore, it is necessary to reduce the air output of elevator with
So that P3 reduces, to reduce the second pressure difference signal Δ Ps.That is, when the first pressure difference signal Δ Pw increases, and the second pressure
When difference signal Δ Ps reduces, the air output in indoor hall and elevator is reduced.
For other situations in addition to above-mentioned two situations, control unit 13 controls the first new blower 2 and the second fresh air
Machine 3 maintains air output constant.
Preferably, control unit 13 is that (Proportion-Integral-Derivative, ratio-integral-are micro- by PID
Point) controller.This system forms a closed loop automatic control system using PID control technology.That is, completing a fresh air volume tune
After section, detection unit starts to initiate new a wheel pressure differential detection and comparison again.That is, pressure difference signal is one about the time
Function.
In the present embodiment, PID controller only needs to make the PID controller of the prior art modification of adaptability.
In the present embodiment, control unit 13 includes ratio control, integration control and differential control.Described control unit 13
It is configured as exporting the control signal according to scaling signal, integrated signal and differential signal.The scaling signal be with it is described
The proportional parameter of pressure difference signal, the integrated signal are the parameter proportional to the integral of the pressure difference signal, the differential
Signal is the parameter proportional to the differential of the pressure difference signal.Ratio control is the basis of PID control.Integration control can be eliminated
Steady-state error, but overshoot can be can increase.Differential control can accelerate Great inertia system response speed and weaken overshoot trend.Cause
This, while use ratio control, integration control and differential control are to be adjusted fresh air volume, it is easier to it achieves the desired results.
In the present embodiment, described control unit is additionally configured to export the control signal according to the following formula:
Wherein, m (t) is control signal, and Kp is proportionality coefficient, and TI is integration time constant, and TD is derivative time constant,
Δ P is pressure difference signal.
When calculating first control signal, Δ P is equal to Δ Pw, and output result is m (t1)；When calculating second control signal
When, Δ P is equal to Δ Ps, and output result is m (t2).Control unit 13 will treated that control signal m (t1), m (t2) are transmitted to
Unit is adjusted, unit is adjusted according to control signal m (t1), m (t2) and controls the first new blower 2 and the second new blower 3.
PID controller includes ratio control, integration control and differential control.The basis of PID control is ratio control.Integral
Control can eliminate steady-state error, but can increase overshoot.Differential control can accelerate Great inertia system response speed and decrease
Overshoot trend.PID technology has tandem product, need to only set three parameter Kp in use due to widely used, using flexible
(proportionality coefficient), TI (integration time constant) and TD (derivative time constant).Moreover, PID control in many cases,
Device can also take one to two kinds of control therein it is not absolutely required to control comprising all three, but ratio control be must can not
Few.
Therefore, the present embodiment can also otherwise realize the adjusting to negative pressure, such as be exported according to scaling signal
The control signal, or, the control signal is exported according to scaling signal and integrated signal, or, according to scaling signal and differential
Signal exports the control signal.
In the present embodiment, Proportional coefficient K p, integration time constant TI and derivative time constant TD are obtained by experiment.
It specifically, can be by the way that expert system unit adjustment parameter be added, using artificial intelligence technology and computer technology, according to this field
The knowledge and experience that one or more experts provide, makes inferences and judges, determine parameter.It is also possible to be answered according to building
With scene different adjustment parameter.In short, the debugging of pid control parameter is the process of comprehensive, each parametric interaction.
In the present embodiment, unit 14 is adjusted to be configured as according to control signal output regulation signal.
Preferably, the adjusting unit 14 is frequency changer circuit, is converted for the frequency to control signal to export and adjust
Signal is saved, adjustment signal carries out air quantity adjusting for controlling new blower.
The regulating system of the present embodiment passes through the monitored sky of the interconnected difference of negative pressure adjusting device detection at least two
Between inside and outside pressure signal, pressure difference signal is obtained, to pass through adjustment signal control according to pressure difference signal output regulation signal
It makes new blower and carries out air quantity adjusting, may be implemented that the negative pressure in monitored space is adjusted in real time in this way.
Fig. 4 is the signal processing schematic diagram of the utility model embodiment regulating system.As shown in figure 4, in present embodiment
In, a closed loop automatic control system is formed using PID control technology.That is, pressure difference passes after completing a fresh air volume and adjusting
Sensor starts to initiate new a wheel pressure differential detection and comparison again.
Preset threshold pressure differential Δ P ' and coefficient of variation β.When pressure difference signal Δ P is less than Δ P '-β, control unit 13
Output control signal m (t) controls new blower and adjusts without air quantity.When pressure difference signal Δ P is greater than Δ P '+β, control unit 13
Output control signal m (t) controls new blower and carries out air quantity adjusting.
Specifically, detection unit detects monitored space interior and external pressure signal, and exports pressure difference signal Δ P.
Control unit 13 makes comparisons pressure difference signal Δ P and threshold pressure differential Δ P ' ± β.
When pressure difference signal Δ P is greater than threshold pressure differential Δ P '+β, control unit 13 exports control letter according to pressure difference signal Δ P
Number m (t).Unit 14 is adjusted according to control signal m (t) output regulation signal v (t).Adjustment signal v (t) is for controlling blower 21
Operating, fresh air is delivered to monitored space.After fresh air conveying, fresh air volume regulating system starts the work of a new wheel
Make.
When pressure difference signal Δ P is less than threshold pressure differential Δ P '-β, control unit 13 does not export control signal, or output control
Signal is zero.Fresh air volume regulating system starts the work of a new wheel.
The regulating system of the present embodiment passes through the monitored sky of the interconnected difference of negative pressure adjusting device detection at least two
Between inside and outside pressure signal, pressure difference signal is obtained, and pressure difference signal and threshold pressure differential are made comparisons, with according to comparing knot
Fruit output regulation signal, the operating of new blower is controlled by adjustment signal, may be implemented in real time to bear monitored space in this way
Pressure is adjusted, to reduce the negative effect that super high-rise building bottom generates the operation of Architectural Equipment due to negative pressure problem.Together
When, it can also control new blower when pressure difference signal is less than threshold pressure differential and not work, it is possible to reduce energy consumption.
The foregoing is merely preferred embodiment of the present application, are not intended to limit this application, for those skilled in the art
For, the application can have various modifications and changes.All any modifications made within the spirit and principles of the present application are equal
Replacement, improvement etc., should be included within the scope of protection of this application.
Claims (10)
1. a kind of negative pressure adjusting device, which is characterized in that described device includes:
Multiple detection units are configured as the interconnected difference of detection at least two and are monitored space interior and external pressure
Signal exports pressure difference signal；
Control unit is connect with the multiple detection unit, is configured as exporting control signal according to the pressure difference signal；And
Unit is adjusted, is connect with described control unit, is configured as controlling corresponding new blower progress wind according to the control signal
Amount is adjusted.
2. negative pressure adjusting device according to claim 1, which is characterized in that described at least two interconnected different quilts
Monitoring space includes the first monitored space and the second monitored space；
The multiple detection unit includes:
First detection unit is mounted on the first monitored space, is configured as the first monitored space interior of detection and outside
Pressure signal exports the first pressure difference signal；And
Second detection unit is mounted on the second monitored space, is configured as the second monitored space interior of detection and outside
Pressure signal exports the second pressure difference signal.
3. negative pressure adjusting device according to claim 2, which is characterized in that described control unit is configured as according to
First pressure difference signal and second pressure difference signal output first control signal and second control signal.
4. negative pressure adjusting device according to claim 1, which is characterized in that described control unit is configured as according to default
Threshold pressure differential and the pressure difference signal export the control signal.
5. negative pressure adjusting device according to claim 1, which is characterized in that the detection unit is differential pressure pickup.
6. negative pressure adjusting device according to claim 1, which is characterized in that described control unit is PID controller.
7. negative pressure adjusting device according to claim 6, which is characterized in that described control unit is configured as according to ratio
Signal, integrated signal and differential signal export the control signal；
Wherein, the scaling signal is the parameter proportional to the pressure difference signal, and the integrated signal is to believe with the pressure difference
Number the proportional parameter of integral, the differential signal is the parameter proportional to the differential of the pressure difference signal.
8. negative pressure adjusting device according to claim 2, which is characterized in that described control unit is configured as when described the
When one pressure difference signal reduces and second pressure difference signal increases, the corresponding new blower of output control signal control increases described first
The air output in monitored space and the second monitored space.
9. negative pressure adjusting device according to claim 2, which is characterized in that described control unit is configured as when described the
When one pressure difference signal increases and second pressure difference signal reduces, the corresponding new blower of output control signal control reduces described first
The air output in monitored space and the second monitored space.
10. a kind of regulating system, which is characterized in that the system comprises:
Such as the described in any item negative pressure adjusting devices of claim 1-9；And
Multiple new blowers are configured as being controlled by the negative pressure adjusting device progress air quantity adjusting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821790630.3U CN208920480U (en) | 2018-10-31 | 2018-10-31 | Negative pressure adjusting device and regulating system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821790630.3U CN208920480U (en) | 2018-10-31 | 2018-10-31 | Negative pressure adjusting device and regulating system |
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| Publication Number | Publication Date |
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| CN208920480U true CN208920480U (en) | 2019-05-31 |
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ID=66711264
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| Application Number | Title | Priority Date | Filing Date |
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| CN201821790630.3U Active CN208920480U (en) | 2018-10-31 | 2018-10-31 | Negative pressure adjusting device and regulating system |
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| CN (1) | CN208920480U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111593936A (en) * | 2020-05-22 | 2020-08-28 | 重庆东登科技有限公司 | Isolation system of emergency rescue mobile hospital |
| WO2021258443A1 (en) * | 2020-06-24 | 2021-12-30 | 深圳市巨鼎医疗股份有限公司 | Negative-pressure control method and apparatus for isolation ward, storage medium, and isolation ward |
-
2018
- 2018-10-31 CN CN201821790630.3U patent/CN208920480U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111593936A (en) * | 2020-05-22 | 2020-08-28 | 重庆东登科技有限公司 | Isolation system of emergency rescue mobile hospital |
| CN111593936B (en) * | 2020-05-22 | 2021-02-23 | 重庆东登科技有限公司 | Isolation system of emergency rescue mobile hospital |
| WO2021258443A1 (en) * | 2020-06-24 | 2021-12-30 | 深圳市巨鼎医疗股份有限公司 | Negative-pressure control method and apparatus for isolation ward, storage medium, and isolation ward |
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